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Finding the Fourth Proportional to 614,120.22, 847,487.61 and 356,047.20

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Solution

The fourth proportional to 614,120.22, 847,487.61 and 356,047.20 is: 491,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,120.22 : 847,487.61 = 356,047.20 : x
  2. Step 2: Convert to fraction form
    614,120.22/847,487.61 = 356,047.20/x
  3. Step 3: Cross multiply
    614,120.22x = 847,487.61 × 356,047.20
  4. Step 4: Simplify right side
    614,120.22x = 301,745,590,575.19
  5. Step 5: Solve for x
    x = 301,745,590,575.19/614,120.22
  6. Step 6: Final answer
    x = 491,346.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.